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- W2059051719 abstract "Seismic operations using the Wide Aperture Recording (WAR) technique were carried out in offshore west Sicily (16.5 km offsets) and in the Sub-Andean Cordillera of Bolivia (9.0 km offsets) where conventional offset data have traditionally proved inadequate for imaging complex subsurface structures. In both cases, noise-free wide aperture events were visible at long offsets, and were successfully stacked using both hyperbolic and linear moveout. In the Sicily datasets, the resulting seismic images disagree with earlier structural interpretations, but the lack of reliable ``calibration`` data in terms of well control or usable conventional seismic data make final evaluation and interpretation of the Sicily wide aperture data ambiguous. In Bolivia good quality seismic data are present across a portion of the WAR survey; the results show that the wide aperture technique may produce a valid structural image, provided the subsurface geometries are sufficiently broad and shallow. For tight structures, the technique is unlikely to produce valid images. In general, the authors` studies show that considerable effort is required at the data processing and interpretation stage, including full waveform and ray-trace modeling, in order to identify event arrivals and to attempt to validate the wide aperture structural images. Reliable calibration data in themore » form of well control or conventional seismic data are needed in order to provide an understanding of the WAR results.« less" @default.
- W2059051719 created "2016-06-24" @default.
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- W2059051719 date "1994-01-01" @default.
- W2059051719 modified "2023-09-25" @default.
- W2059051719 title "Wide aperture seismic recording in offshore west Sicily and Bolivia" @default.
- W2059051719 doi "https://doi.org/10.1190/1.1822875" @default.
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